A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5935-01-608-5884
NSN 5945-00-118-1103
NSN 6685-01-250-2669
NSN 6650-01-052-2143
NSN 6240-00-127-7874
NSN 6105-00-520-5119
NSN 5996-01-592-8104
NSN 4140-00-812-2669
NSN 5965-01-485-3501
NSN 5835-00-461-9984
NSN 6105-01-377-4717
NSN 5835-01-561-2959